Uniform emission backlight

Details Uniform emission backlight Uniform emission backlight

1985-06-10

1987-12-22

Cuchlinski, Jr., William A.

Illumination

Illuminated scale or dial

Edge illuminated modifier or light rod/pipe

362 31, 350345, F21V 1304

Patent

active

047149833

ABSTRACT:
A backlight having lamps inserted into ends of a transparent member is disclosed. A top surface of the member is polished and contains an opaque section opposing the lamps. A bottom surface of the member is uniformly frosted so that variations in the average depth of surface irregularities are minimized.

REFERENCES:
patent: 4096550 (1978-06-01), Boller et al.
patent: 4126383 (1978-11-01), Doriguzzi et al.
patent: 4310871 (1982-01-01), Adachi
patent: 4487481 (1984-12-01), Suzawa
patent: 4573766 (1986-03-01), Bournay, Jr. et al.

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